LIGHT EMITTING DEVICE AND SYSTEM PROVIDING WHITE LIGHT WITH VARIOUS COLOR TEMPERATURES

摘要

PURPOSE: A light emitting device and a system with provides a white light with various color temperatures are provided to obtain the light emitting device including low power consumption, long lifetime and a high vibration resistance. CONSTITUTION: A light emitting device generates a first light by a driving bias. A sensor detects the body temperature of a user. A fluorescent layer includes a fluorescent which generates a second light by wavelength converting a part of the first light. A white light is generated using the first light and the second light. The temperature of the white light is changed by adjusting the driving bias.